QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

11 km ENE of Enumclaw, Washington

· 14 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N King County 27 kmPierce County 32 kmKitsap County 75 kmThurston County 82 kmLewis County 84 kmKittitas County 89 kmSnohomish County 90 kmMason County 101 kmChelan County 115 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
Magnitude
M 1.8 (ml)
Depth
14 km below the surface
Felt
no reports yet
Nearest
King County, 27 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1113 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 15 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 710,000× the energy of this one
  3. Around the size people start to feel M 3.0 63× the energy of this one
  4. This earthquake M 1.8 about 15 lb of TNT

Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

Where

Epicentre 47.2442, -121.8477. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
King County, WA 27 km (17 mi) S of here earthquakes near King County
Pierce County, WA 32 km (20 mi) NE of here earthquakes near Pierce County
Kitsap County, WA 75 km (46 mi) SE of here earthquakes near Kitsap County
Thurston County, WA 82 km (51 mi) ENE of here earthquakes near Thurston County
Lewis County, WA 84 km (52 mi) NNE of here earthquakes near Lewis County
Kittitas County, WA 89 km (56 mi) W of here earthquakes near Kittitas County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

57 earthquakes have been recorded within 50 km since this one.

  1. 1.6 1 km SE of Kapowsin, Washington
  2. 1.5 15 km NNE of Ashford, Washington
  3. 2.3 0 km ESE of Waller, Washington
  4. 2.0 6 km NE of Snoqualmie, Washington
  5. 1.5 19 km SSE of Carbonado, Washington
  6. 1.8 17 km SE of Carbonado, Washington
  7. 2.3 1 km S of Fall City, Washington
  8. 2.3 15 km NNE of Ashford, Washington
  9. 2.0 3 km ENE of Eatonville, Washington
  10. 1.9 10 km NE of Ashford, Washington
  11. 1.6 14 km N of Snoqualmie Pass, Washington
  12. 2.2 13 km NE of Ashford, Washington
  13. 1.7 4 km NNW of Fall City, Washington
  14. 2.4 10 km NNE of Ashford, Washington
  15. 2.1 3 km NNE of White Center, Washington

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.